Hello cire84117,
When the server has to send out a 'make-up' work unit to complete a quorum, it gives the unit a short deadline (so as not to inconvenience the members waiting for the quorum to complete). These work units are sent to computers that the server has tagged as 'reliable'. The server keeps track of turn-around times and is constantly updating the 'reliable' list. The easiest way to get on the list is to run 24/7 with a short cache.

Lawrence